✔️ In buildings that have residential and office use, special and safe water must be supplied with connections free from the risk of reverse flow or back suction.
✔️ In buildings that have sanitary facilities, water must be be supplied in sufficient quantity and with sufficient pressure. ✔️ Water heaters and heating and water storage devices must be designed and installed in such a way that they are safe from any kind of explosion caused by an excessive increase in water temperature. br>
✔️ Where it is possible to access the urban sewage network, the sewage of residential buildings should be connected to it. be resistant to corrosion and hidden with non-absorbent surfaces and free from clogging. .
✔️ The design and installation conditions of sanitary sewer systems should be such that they can remove the related waste water and sewage from each of these sanitary devices without causing any pollution, clogging the path and leaving solid waste inside the sewer pipe to the places Determined to transfer. Inspection valves should be provided in a sufficient number in the building's plumbing system so that it is possible to clean the pipes when they are clogged. Use a siphon with a suitable seal directly and indirectly to the sewer network. By selecting a sufficient distance between the devices for cleaning, they should be reasonably accessible. ✔️ The construction and installation of sewer pipes should be made using resistant and impermeable materials against water and harmful vapors from sewage air. Installation should be done with proper skill and execution and use of quality materials. Also, during the normal use of new systems and with renovated systems, they should be tested for leaks and identifying any defects. The resistance of building elements should be observed. The end of the pipe and net, which continues on the roof, must be designed in such a way as to prevent the return of polluted air to the building and the non-transmission of air from the pipe to the outside. Reverse flow of food waste, disinfectant waste, and other similar materials are meant: Materials that clog pipes and connections or produce flammable gases in combination with waste materials are not allowed to enter the building's sewer network.
✔️ Sewage or other waste water from the building's system and piping should not be discharged into the surface layers of the soil or surface water, unless they have been previously treated with a suitable method.
